Cultivator attachment for tractors



March 15, 1938. R. c. LANGE CULTIVATOR ATTACHMENT FOR TRACTORS FiledJune 22, 1937 2 Sheets-Sheet l Zd MMJC [large R. C. LANGE March 15,1938.

MENT FOR TRACTORS CULTIVATOR ATTACH Filed June 22, 1937 2 Sheets-Sheet 2Inventor Fdympw4 ilnfie Afforneys Patented Mar. 15, 1933 UNITED, STATESPATENT OFFICE- Raymond Carl Lange, Odebolt, Iowa Application June 22,1937, Serial No. 149,735

1 Claim.

This invention relates to soil working tools, and more particularly to acultivator attachment for tractors.

An object of the invention is to provide a cultivating implement of thecharacter above mentioned, which may be readily detachably connectedwith a tractor and having improved means whereby the soil engaging unitsof the attachment are raised and lowered relative to the ground, asfound desirable.

The invention, together with its objects and advantages, will be bestunderstood from a. study of the following description taken inconnection with the accompanying drawings, wherein:

Figure 1 is a perspective view illustrating the application of theattachment to one side of a tractor at the forward end of the latter.

Figure 2is a perspective view showing fragmentarily the raising andlowering rods and levers, and

Figure 3 is a perspective view of an attaching bar and brace rodtherefor, the mentioned parts being shown separated.

Referring to the drawings by reference numerals, it will be understoodthat in the preferred embodiment of the invention, there will be acultivator attachment at each of the two sides of the tractor and thateach attachment is disposed adjacent the forward or front end of thetractor.

In the drawings, the attachment is indicated generally by the referencenumeral 5. In the preferred embodiment thereof, each attachment 5comprises an attaching bar 6 in-the nature of a tubular bar which isadapted to extend laterally from one side of the tractor, a portion ofwhich is shown in the drawings and indicated generally by the referencenumeral '1. The bar 6, at one end thereof, is detachably secured to theframe 8 of the tractor through the medium of an attaching plate 9 formedintegrally with one end of the bar 6 and suitably apertured toaccommodate a U-bolt III, which straddles the frame of the tractor, asclearly shown in Figure l.

The bar 6 is braced relative to the tractor through the medium of adiagonal brace bar I I, which at one end is suitably bolted or otherwisesecured to the frame of the tractor at the forward end of the frame andat its other end is bolted or otherwise secured, as at 12, to the outerfree end of the bar 6. For strength, the brace bar I l is formed ofangle iron and is itself braced relative to the bar 6 through the mediumof a brace 13 formed of strap iron and riveted or otherwise secured atone end to the brace ll' and at its other end secured to the under sideof the bar 6 through the medium of the aforemene tioned bolt 12.

Further, the attachment 5 includes-a pair of rigs l4 and each rig I4consists of an inverted U-shaped bracket 15 secured to the bar 5 throughthe medium of a pair of U-bolts l6 and I1, respectively. Pivoted to thedownturned flanges of the bracket 15, as at l8, are side bars 19 whichat their free ends are connected by a bolt 20. Further, and inwardlyfrom the free ends thereof, the side bars 19 are secured in spaced relation through the medium of transverse and diagonal spacer bars 2i.

Disposed on the bolt 20 is a spacer sleeve 22 and confined on the bolt20 between one end of the sleeve 22 and a side bar I9 is the aperturedend of a vertical substantially Z-shaped strap or plate 23. Alsoconfined between one end of the spacer sleeve 22 and the other of theside bars 19 is the intermediate portion of an aper- 0 tured hangerbracket or oblong plate 24 and securely bolted to the lower end of thehanger brackets 23 and 24, as at 25, is the intermediate portion of atool carrying beam 25 on which, at the front and rear ends thereof, areclamped as at 21, the shanks of earth-working tools or cultivatorshovels 28. Also, each tool carrying beam 26 is braced relative to aside bar l9 through the medium of a suitable brace member 29.

Secured to the top of the beam or bar 6 through the medium of the bolts11, are brackets 30, and the hanger brackets 24 of the rigs l4 areprovided at their upper ends with vertical rows of spaced apertures toaccommodate eye-bolts 3|, which accommodate the nut-equipped ends ofsuspension rods 32, which rods 32 at one end are pivoted to the brackets35, as at 33.

For raising and lowering the rigs 14 to place the tools 28 into and outof ground engaging posi- 40 tion, there is supported between thebrackets 30 a rod 34 on which are rotatable tubular shafts 35 and 36,respectively. The tubular shaft 36 is provided with an arm 31 to whichis pivotally connected one end of a connecting rod or link 38, the otherend of which is suitably engaged with a plate 39 on the inner side ofone of the side members 19 of rig I4. Also, the shaft 36 is providedwith an arm 39 to which is pivoted one end of a push and pull rod 40.The rod 40 at its free 50 end is provided with a rack segment 4| and atsaid end is also pivoted, as at 42, to a hand lever 43. The lever 43 ispivotally mounted, as at 44, on some suitable fixed part 45 of thetractor I and in proximity to the seat of the tractor, so

that the lever 43 may be conveniently manipulated by the operator of thetractor.

The lever 48 is provided with a suitable detent 46 so that when thedetent 45 engages with the rack segment 4|, swinging movement of thelever 43 will be transmitted to the rod 40 for rotating the shaft 36.Rotation of the shaft 38 will be transmitted through the link 38 to therig l4 for raising and lowering the earth working tools 28, the rig l4swinging vertically on its pivot II.

The shaft 35 is also provided with an arm 41 to which is pivotallyconnected one end of a link 48 which, at its free end, is connected tothe rig i4, as at 49, and in a manner identical with the manner in whichthe aforementioned link 38 is connected with the rig l4. Also, the shaft35 is provided with an arm 50 to which is pivoted one end of a push andpull rod H which extends rearwardly and at its rear free end is providedwith a rack segment 52 to which is pivoted, as at 53, a hand lever 54.The lever 54 in turn is pivoted, as at 55, to the push and pull rod 40forwardly of the rack segment 4i. The lever 54 is also equipped with adetent 56 cooperable with the rack segment 52.

It will thus be seen that by holding the'lever 43 against pivotalmovement and swinging the lever 54 about its pivot 55, the push and pullrod will be manipulated for raising and lowering the rig l4 withoutaffecting the position of the rig i4. It will also be apparent that withthe detent 46 engaged with the rack segment 4| and with the detent 55engaged with the rack segment '52, swinging movement of the lever 43will be transmitted to the lever 54, so that the rods 40 and 5| will besimultaneously operated for raising and lowering, simultaneously, therigs l4 and I4, at one side of the tractor.

Thus it will be seen that the rigs l4 and I4 may be operatedsimultaneously or separately and independently of one another, as founddesirable.

It will be further appreciated that the manner in which the brackets l5and 30 are clamped to the, rod 8, the rigs l4 and I4 may be adjustedlaterally relative to one another to position the rigs either closetogether or far apart, as the spacing of the rows of crops may require.

It is thought that a clear understanding of the construction, utilityand advantages of the invention will be had without a more detaileddescription.

Having thus described the invention, what is claimed as new is:

In a cultivator attachment for tractors, a supporting bar provided atone end thereof with means for detachably securing said bar to a tractorframe to extend laterally from the tractor, a pair of brackets mountedon the supporting bar for longitudinal adjustment on said bar relativeto one another, means for securing said brackets on said supporting barat the desired position of adjustment, and each of said means includingan upstanding bracket element, a tool-carrying rig pivoted at one endthereof to each of the first mentioned brackets, each of said rigsincluding an upstanding hanger bracket, suspension rods pivoted at oneend to the aforementioned upstanding bracket elements, inter-engagingmeans on each of said suspension rods and each of said hanger bracketsfor detachably and adjustably connecting one end of each suspension rodto a hanger bracket, a rodsupported fixedly between said bracketelements, tubular shafts rotatably supported on the last named rod, eachof said tubular shafts being provided with a pair of arms disposed atdifferent degrees relative to one another, a link connecting one arm ofeach pair of arms with one of said rigs, whereby to transmit rotativemovement of a tubular shaft to a rig for raising and lowering thelatter, and pushing and pulling mechanism connected with the second armof each pair and operable for rotating the associated tubular shaftwhereby said rigs may be vertically adjusted either simultaneously orindependently of one another, optionally.

RAYMOND CARL LANGE.

